Leprous is a Norwegian Progressive Metal band from Notodden that was founded in 2001. In the years 2004 and 2006 they released demos, which allowed the band to increase their profile. In August 2008, the debut album Tall Poppy Syndrome was recorded, after which the band was looking for a suitable label. After signing with Sensory Records, the album was released in May 2009. In 2011, the band released its second album, Bilateral, on InsideOut Music, before joining Coal in 2013 and The Congregation in 2015, via the same label. Their latest work appeared in 2019 with the title Pitfalls.